Results 51 to 60 of about 51,544 (292)

Multiband Switchable Microwave Absorbing Metamaterials Based on Reconfigurable Kirigami–Origami

open access: yesAdvanced Functional Materials, EarlyView.
A reconfigurable metamaterial featuring tunable microwave‐absorbing and load‐bearing performance is proposed. Stretchable kirigami and bistable origami configurations are integrated as actuating components, and the synergistic deformation mechanisms are systematically analyzed.
Weimin Ding   +7 more
wiley   +1 more source

DAILY VARIATION IN EARTH'S MAGNETIC FIELD

open access: yesRudarsko-geološko-naftni Zbornik, 2000
Daily variation in Earth's magnetic field is changed during the time of the day and according to Earth's latitude and lengthwise. Due to great sensitivity of new proton magnetometers there is a question how daily variation vary according to distance from
Tihomir Gregl
doaj  

The Earth's Magnetic Field

open access: yesEos, Transactions American Geophysical Union, 2000
The study of the Earth's magnetic field is one of the oldest scientific disciplines. Research in geomagnetism enabled information to be deduced about the Earth's interior, the electrodynamics of the upper atmosphere at altitudes above 100 km, and the processes at work in interplanetary space and even on the surface of the Sun.Regular recordings of the ...
openaire   +1 more source

Earth magnetic field effects on the cosmic electron flux as background for Cherenkov Telescopes at low energies [PDF]

open access: yes, 2012
Cosmic ray electrons and positrons constitute an important component of the background for imaging atmospheric Cherenkov Telescope Systems with very low energy thresholds.
A.C. Rovero   +26 more
core   +2 more sources

GeAl2‐2xFe2xO3(OH)4 Nanotubes: New Electrocatalyst for Oxygen Evolution Reaction

open access: yesAdvanced Functional Materials, EarlyView.
Fe‐doped imogolite nanotubes are synthesized via a one‐step hydrothermal method with varying Fe substitution ratios x. Structural and spectroscopic analyses confirm homogeneous Fe incorporation while preserving tubular shape. Optimal doping at x = 0.05 enhances optical absorption, narrows band gap, reduces charge transfer resistance, and significantly ...
Yassine Naciri   +12 more
wiley   +1 more source

Multi‐Ion Doping Controlled CEI Formation in Structurally‐Stable High‐Energy Monoclinic‐Phase NASICON Cathodes for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
The graphical abstract illustrates the synthesis pathway, morphological feature, and thermodynamic feasibility of entropy‐engineered NASICON cathodes for sodium‐ion batteries. Abstract Overcoming the energy density limitations of sodium‐ion batteries (NIBs) requires innovative strategies to optimize cathode materials.
Sharad Dnyanu Pinjari   +9 more
wiley   +1 more source

Ukrainian geomagnetic repeat station network and results of the field work reduced to the epoch 2005.5

open access: yesAnnals of Geophysics, 2013
The results of geomagnetic field components of the renewed Ukrainian repeat stations (RS) network are presented. The methods of absolute geomagnetic and astro-geodetic measurements are described.
Valentyn Maksymchuk   +4 more
doaj   +1 more source

Remote magnetic resonance sounding for exploration of pore space microstructure and aquifer macrostructure [PDF]

open access: yes, 2016
Proton nuclear magnetic resonance is a type of nuclear magnetic resonance (NMR), which is widely used to detect hydrogen containing liquids, like water or hydrocarbons.
Maryasov, A. G.   +2 more
core   +1 more source

Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres

open access: yesAdvanced Functional Materials, EarlyView.
MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel   +3 more
wiley   +1 more source

Magnetic declination of the territory of Ukraine: the results of observations and calculations

open access: yesГеофизический журнал, 2015
A technology is proposed for calculating the strength and angular components of the vector of the induction of the Earth's magnetic field. The technology is based on the development of a three-dimensional model of the earth's crust and the calculation of
M.I. Orlyuk   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy